吉林大学学报(工学版) ›› 2026, Vol. 56 ›› Issue (9): 2421-2434.doi: 10.13229/j.cnki.jdxbgxb.20250232

• 交通运输工程·土木工程 • 上一篇    

超大型立式浮顶储罐液固耦合地震响应数值模拟分析

董莉1(),常卫2,3,张博一2,3(),王伟2,3,郑文忠2,3   

  1. 1.哈尔滨学院 智能与建筑工程学院,哈尔滨 150086
    2.哈尔滨工业大学 结构工程灾变与控制教育部重点实验室,哈尔滨 150090
    3.哈尔滨工业大学 土木工程学院,哈尔滨 150090
  • 收稿日期:2025-03-20 出版日期:2026-09-01 发布日期:2026-09-07
  • 通讯作者: 张博一 E-mail:dongli610@163.com;zhangby@hit.edu.cn
  • 作者简介:董莉(1979-),女,正高级工程师,硕士. 研究方向:组合结构. E-mail: dongli610@163.com
  • 基金资助:
    魁元实验室开放课题项目(KY2024034);黑龙江省科学基金-联合引导项目(LH2020E058);中央高校基本科研业务费专项资金项目(HIT.OCEF.2024053)

Simulation analysis on fluidstructure interaction seismic response of supersized atmospheric vertical floating roof oil storage tank

Li DONG1(),Wei CHANG2,3,Bo-yi ZHANG2,3(),Wei WANG2,3,Wen-zhong ZHENG2,3   

  1. 1.School of Intelligence and Civil Engineering,Harbin University,Harbin 150086,China
    2.Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,Harbin Institute of Technology,Harbin 150090,China
    3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China
  • Received:2025-03-20 Online:2026-09-01 Published:2026-09-07
  • Contact: Bo-yi ZHANG E-mail:dongli610@163.com;zhangby@hit.edu.cn

摘要:

以实际工程中的原型储罐为研究对象,基于ANSYS平台构建有限元模型,系统分析了三向地震激励下罐体的动力响应特性、环形基础不均匀沉降对罐体结构的影响,以及长周期水平地震动诱发的罐内液体晃动波高变化规律。研究结果表明:在三向地震作用下,罐体加速度响应在罐底与罐顶区域均较为显著,水平加速度放大系数约为5;罐壁的水平变形与应力沿高度方向呈先上升后下降的趋势,最大值均出现在罐体中下部区域。在基础沉降作用下,罐底在环形沉降区中心处产生最大竖向位移;随着沉降范围扩大,罐壁最下圈板逐渐向内凹陷,罐底局部应力达到钢材屈服强度,引发塑性变形。若计入焊缝刚度与连接细节的影响,罐壁与罐底连接区域易发生局部屈曲或焊趾开裂等损伤模式。此外,即便峰值加速度较低,具有较长卓越周期的地震动仍可激发显著的液体晃动,导致较大的波高响应,这一现象可合理解释汶川地震期间西安某中石化油库因剧烈液体晃动引发结构卡滞与损坏的实际情况。本研究结论可为大型浮顶储油罐的抗震性能评估与优化设计提供理论支撑与工程参考。

关键词: 10万m3储油罐, 基础沉降, 长周期地震作用, 液体晃动波高

Abstract:

This study investigates a full-scale prototype tank from actual engineering practice, employing the ANSYS platform to develop a finite element model for a systematic analysis of the tank's dynamic response under three-component seismic excitation, the influence of non-uniform settlement of the annular foundation on structural behavior, and the sloshing wave height variation induced by long-period horizontal ground motions. The results indicate that under triaxial seismic excitation, the tank exhibits pronounced acceleration responses at both the base and the roof, with a horizontal acceleration amplification factor of approximately 5. The horizontal deformation and stress in the tank wall first increase and then decrease along the height, with peak values occurring in the lower-middle region of the tank. Under foundation settlement, the maximum vertical displacement at the tank base occurs at the center of the annular settlement zone, while the base edge exhibits a lifting-like warping deformation. As the settlement extent increases, the lowest shell course progressively buckles inward, and localized stresses at the tank base reach the yield strength of the steel, leading to plastic deformation. When weld stiffness and connection details are considered, the junction between the tank wall and base is susceptible to local buckling or toe-cracking damage modes. Furthermore, even ground motions with relatively low peak ground acceleration but long predominant periods can induce significant liquid sloshing, resulting in substantial wave height responses—this phenomenon provides a plausible explanation for the structural jamming and damage observed at a Sinopec oil depot in Xi'an during the 2008 Wenchuan earthquake, which was attributed to intense liquid sloshing. The results of this study offer theoretical support and practical engineering references for seismic performance assessment and optimized design of large-scale floating-roof storage tanks.

Key words: 100 000 m3 oil storage tank, foundation settlement, long period seismic action, liquid sloshing wave height

中图分类号: 

  • U441.4

表1

储油罐材料参数"

参数数值

罐壁、

罐底

杨氏弹性模量E/Pa2.06×1011
泊松比v0.3
屈服应力σs/Pa4.9×108
切线模量σl /Pa2.06×109

混凝土

环墙

钢筋密度ρ/(kg·m-37 800
杨氏弹性模量E/Pa2×1010
泊松比v0.2
材料密度ρ/(kg·m-32 500
混凝土轴心抗压强度设计值fc/Pa1.43×107

砂土

垫层

杨氏弹性模量E/Pa3×108
材料密度ρ/(kg·m-31 900
泊松比v0.4
摩擦角/(°)31
液体体积模量K3×109
材料密度ρ/(kg·m-3850
粘性系数/[(N·S)·m-10.002 28
浮顶材料密度ρ/(kg·m-3100
杨氏弹性模量E/Pa2×1010
泊松比v0.3

图1

10万立方米储油罐有限元模型"

图2

模型与试验结果对比"

图3

空罐模态分析"

图4

液固耦合模态分析"

图5

储油罐节点位置示意"

图6

加速度峰值为0.2g的El Centro波作用下各节点X向和Y向加速度峰值沿罐壁高度的分布"

图7

加速度峰值为0.2g的El Centro波作用下各节点X向和Y向位移峰值沿罐壁高度的分布"

图8

加速度峰值为0.2g的El Centro波作用下各节点X向和Y向应力峰值沿罐壁高度的分布"

图9

加速度峰值为0.4g的El Centro波作用下各节点X向和Y向加速度峰值沿罐壁高度的分布"

图10

加速度峰值为0.4g的El Centro波作用下各节点X向和Y向位移峰值沿罐壁高度的分布"

图11

加速度峰值为0.4g的El Centro波作用下最大应力时程曲线"

图12

应力最大值分布(Pa)"

图13

X交点和Y交点罐底提离分布"

图14

加速度峰值为0.4g的卧龙波作用下各节点X向和Y向加速度峰值沿罐壁高度的分布"

图15

加速度峰值为0.4g的卧龙波作用下各节点X向和Y向位移峰值沿罐壁高度的分布"

图16

加速度峰值为0.4g的卧龙波作用下各节点X向和Y向应力峰值沿罐壁高度的分布"

图17

罐底最大提离高度时程曲线"

表2

不同环形区域沉降下罐体响应"

径向尺寸

S/m

最大竖向位移/mm最大径向位移/mm罐底最大应力/MPa罐壁最大应力/MPa
无沉降47.90241
2.022954.6354241
2.540458.65483284
3.0503490

图18

无沉降时罐体径向位移(m)"

图19

无沉降时罐壁应力(Pa)"

图20

储油罐S=2 m沉降区域基础沉降罐体响应"

图21

储油罐S=2.5 m沉降区域基础沉降罐体响应"

图22

储油罐S=3 m沉降区域基础沉降罐体响应"

表3

规范计算值和本文模拟计算值 (m)"

美国规范日本规范中国规范模拟结果
1.882.031.770.80

图23

各卓越周期下液体的最大晃动波高"

图24

各卓越周期下液体的最大晃动波高时程曲线"

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